It's not really SMT or adding small cores

By: Dummond D. Slow (mental.delete@this.protozoa.us), November 18, 2020 4:27 pm
Room: Moderated Discussions
Doug S (foo.delete@this.bar.bar) on November 18, 2020 3:02 pm wrote:
> Dummond D. Slow (mental.delete@this.protozoa.us) on November 18, 2020 7:58 am wrote:
> > Doug S (foo.delete@this.bar.bar) on November 18, 2020 7:44 am wrote:
> > >
> > > If so, then the only argument is that 4 big cores WITH SMT along with 4 little cores is faster
> > > than 4 big cores without SMT and 4 little cores. Which is obvious, but then you could add 4
> > > more little cores, or one more big core, to reach that level of performance without all the
> > > extra design/verification/security headaches of SMT. Before someone says "but that costs more
> > > because the die is bigger", yes, but we're talking about increasing the M1's die size maybe
> > > 3% - and for something that will benefit ALL MT loads, not just the ones are helped by SMT.
> >
> > Oh, the die size argument. Well if adding a core costs so little, why didn't Apple already do it?
>
>
> Because this is the CPU designed for the lowest end entry level Macs. And incidentally
> almost certainly the exact same piece of silicon that will be called A14X when
> it is installed in the next generation iPad Pro early next year.
>
> There will be Apple Silicon CPUs with more cores for higher end Macs, all the way up to the Mac Pro.
> I'm sure no matter how fast the Mac Pro is, someone will make the argument "it could have been even
> faster if the big cores had SMT". I suppose whether that question matters depends on whether it ends
> up clearly faster than any x86 workstation available at any price at the time it is released.

My point was that you that it is problematic to use "this costs so little silicon so it is almost free" or "apple doesn't have to care about silicon budget" as a rebuttal to something when it is clear that at least to some extent they still do care about sizes of stuff - the chip clearly could have been bigger but is not.

This same fallacy really rises up with every company. When you look at for example AMD chips, the cores are suprisingly little. "What, 4 cores only take 20% of the die or less, why didn't they add 2x as much, I would pay extra for that! Isn't that dumb?" Or, "what, those 4MB of L3 cache they cut was like just 4 mm! WHY YOU IDIOTS?"
Companies clearly have reasons to do stuff like that.
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TopicPosted ByDate
1st round of M1 GPU benchmarksMaynard Handley2020/11/16 01:46 PM
  1st round of M1 GPU benchmarksAdrian2020/11/16 02:02 PM
    1st round of M1 GPU benchmarksI_vs2020/11/17 02:18 AM
  1st round of M1 GPU benchmarksRType2020/11/16 02:06 PM
    1st round of M1 GPU benchmarksMaynard Handley2020/11/16 02:45 PM
      And the NZ'ers are first to deliver cinebench scoresMaynard Handley2020/11/16 03:58 PM
        And the NZ'ers are first to deliver cinebench scoresWill2020/11/16 04:30 PM
          re: "scaling"Dummond D. Slow2020/11/16 05:06 PM
            re: "scaling"Maynard Handley2020/11/16 05:29 PM
              re: "scaling"Dummond D. Slow2020/11/16 05:51 PM
                re: "scaling"Maynard Handley2020/11/16 06:51 PM
                  re: "scaling"Dummond D. Slow2020/11/16 07:22 PM
                    re: "scaling"Maynard Handley2020/11/16 07:23 PM
                      re: "scaling"Maynard Handley2020/11/16 07:27 PM
                        re: "scaling"Dummond D. Slow2020/11/16 07:37 PM
                          re: "scaling"Chester2020/11/16 09:25 PM
                          Actual power consumption values.Dummond D. Slow2020/11/17 08:05 AM
                    re: "scaling"Doug S2020/11/17 11:25 AM
                      Apple loses a lot by not having turbo and SMTDummond D. Slow2020/11/17 12:18 PM
                        Apple loses a lot by not having turbo and SMTDoug S2020/11/17 01:21 PM
                          Apple loses a lot by not having turbo and SMTblaine2020/11/19 06:18 PM
                            Apple loses a lot by not having turbo and SMTDummond D. Slow2020/11/19 06:31 PM
                        Apple loses a lot by not having turbo and SMTTJ2020/11/18 02:10 AM
                          Cinebench is NOT a representation of average workloadsAndrei F2020/11/18 06:21 AM
                            SPEC is NOT a representation of average workloadsChester2020/11/18 08:02 AM
                              SPEC is NOT a representation of average workloadsDummond D. Slow2020/11/18 08:17 AM
                                SPEC is NOT a representation of average workloadsnone2020/11/18 09:18 AM
                                  x264 without SIMD is nonsenseDummond D. Slow2020/11/18 09:31 AM
                                  SPEC is NOT a representation of average workloadsMaynard Handley2020/11/18 10:13 AM
                                    SPEC is NOT a representation of average workloadsDummond D. Slow2020/11/18 10:21 AM
                                      SPEC is NOT a representation of average workloadsWilco2020/11/18 10:42 AM
                                        role of hand-optimized assembly in multimedia encodersDummond D. Slow2020/11/18 12:06 PM
                                          role of hand-optimized assembly in multimedia encodersdifferent anon2020/11/18 02:27 PM
                                            role of hand-optimized assembly in multimedia encodersDummond D. Slow2020/11/18 03:47 PM
                                              role of hand-optimized assembly in multimedia encodersDummond D. Slow2021/05/18 01:29 PM
                                          role of hand-optimized assembly in multimedia encodersRichardC2020/11/18 04:42 PM
                                          role of hand-optimized assembly in multimedia encodersnone2020/11/19 08:17 AM
                                      SPEC is NOT a representation of average workloadsnone2020/11/18 11:14 AM
                                        SPEC is NOT a representation of average workloadsDummond D. Slow2020/11/18 12:17 PM
                                      SPEC is NOT a representation of average workloadsMaynard Handley2020/11/18 12:03 PM
                                        SPEC is NOT a representation of average workloadsDummond D. Slow2020/11/18 12:25 PM
                                          SPEC is NOT a representation of average workloadsMaynard Handley2020/11/18 01:03 PM
                                            SPEC is NOT a representation of average workloadsDummond D. Slow2020/11/18 03:57 PM
                                              SPEC is NOT a representation of average workloadsMaynard Handley2020/11/18 05:36 PM
                                                SPEC is NOT a representation of average workloadsDummond D. Slow2020/11/18 05:50 PM
                                                  SPEC is NOT a representation of average workloadsDoug S2020/11/19 10:13 AM
                                                    SPEC is NOT a representation of average workloads-.-2020/11/19 03:34 PM
                                                    SPEC is NOT a representation of average workloadsDummond D. Slow2020/11/19 03:35 PM
                                              SPEC is NOT a representation of average workloadsEtienne Lorrain2020/11/19 05:04 AM
                                                SPEC is NOT a representation of average workloadsDummond D. Slow2020/11/19 06:58 AM
                                SPEC is NOT a representation of average workloadsChester2020/11/18 03:06 PM
                                  about bitratesDummond D. Slow2020/11/18 04:04 PM
                                    about bitratesChester2020/11/19 03:45 PM
                                  SPEC is NOT a representation of average workloadsOok2020/11/18 04:05 PM
                                    SPEC is NOT a representation of average workloadsDummond D. Slow2020/11/18 04:21 PM
                                  SPEC is NOT a representation of average workloadsNoSpammer2020/11/19 07:48 AM
                              SPEC is NOT a representation of average workloadsAndrei F2020/11/18 08:44 AM
                                SPEC is NOT a representation of average workloadsDummond D. Slow2020/11/18 08:48 AM
                                  SPEC is NOT a representation of average workloadsAdrian2020/11/18 09:15 AM
                                    SPEC is NOT a representation of average workloadsDummond D. Slow2020/11/18 09:41 AM
                                      SPEC is NOT a representation of average workloadsAdrian2020/11/18 10:04 AM
                                        SPEC is NOT a representation of average workloadsDummond D. Slow2020/11/18 10:32 AM
                                          SPEC is NOT a representation of average workloadsAdrian2020/11/18 11:26 AM
                                    SPEC is NOT a representation of average workloadsMaynard Handley2020/11/18 10:22 AM
                                      SPEC is NOT a representation of average workloadsAdrian2020/11/18 11:28 AM
                                  SPEC is NOT a representation of average workloadsAndrei F2020/11/18 09:34 AM
                                    SPEC is NOT a representation of average workloadsDummond D. Slow2020/11/18 10:00 AM
                                    SPEC is NOT a representation of average workloadsChester2020/11/18 03:18 PM
                                    SPEC is NOT a representation of average workloadsJukka Larja2020/11/20 09:03 AM
                                SPEC is NOT a representation of average workloadsChester2020/11/18 03:13 PM
                              SPEC is NOT a representation of average workloadsnone2020/11/18 09:07 AM
                                SPEC is NOT a representation of average workloadsMichael S2020/11/18 02:33 PM
                                  Interesting, thanks! (NT)none2020/11/19 08:03 AM
                            Cinebench is NOT a representation of average workloadsrwessel2020/11/18 08:03 AM
                              Cinebench is NOT a representation of average workloadsDoug S2020/11/18 08:44 AM
                                Cinebench is NOT a representation of average workloadsDummond D. Slow2020/11/18 08:52 AM
                                  Cinebench is NOT a representation of average workloadsDoug S2020/11/18 03:59 PM
                                    Cinebench is NOT a representation of average workloadsDummond D. Slow2020/11/18 04:12 PM
                                      Cinebench is NOT a representation of average workloadsDoug S2020/11/19 10:19 AM
                                        Cinebench is NOT a representation of average workloadsDummond D. Slow2020/11/19 04:03 PM
                                          Cinebench is NOT a representation of average workloadsUngo2020/11/19 09:12 PM
                                            Cinebench is NOT a representation of average workloadsDummond D. Slow2020/11/20 09:45 AM
                                It's not really SMT or adding small coresDummond D. Slow2020/11/18 08:58 AM
                                  It's not really SMT or adding small coresDoug S2020/11/18 04:02 PM
                                    It's not really SMT or adding small coresDummond D. Slow2020/11/18 04:27 PM
                                Cinebench is NOT a representation of average workloadsxyz2020/11/18 01:14 PM
                                  Cinebench is NOT a representation of average workloadsMaynard Handley2020/11/18 01:54 PM
                                    Cinebench is NOT a representation of average workloadsGabriele Svelto2020/11/18 02:41 PM
                                      Cinebench is NOT a representation of average workloadsMaynard Handley2020/11/18 02:52 PM
                                        Cinebench is NOT a representation of average workloadsGabriele Svelto2020/11/18 03:05 PM
                            Cinebench is NOT a representation of average workloadsTJ2020/11/18 12:46 PM
                            SMT shines in IO heavy & commercial DB workloadsxyz2020/11/18 01:05 PM
                            "Average workloads" don't exist (NT)Foo_2020/11/19 03:55 AM
                          Apple loses a lot by not having turbo and SMTDummond D. Slow2020/11/18 08:02 AM
                            Apple loses a lot by not having turbo and SMTMaynard Handley2020/11/18 09:37 AM
                              Apple loses a lot by not having turbo and SMTDummond D. Slow2020/11/18 09:55 AM
                              Apple loses a lot by not having turbo and SMTDavid Hess2020/11/18 01:12 PM
                                Apple loses a lot by not having turbo and SMTMaynard Handley2020/11/18 02:12 PM
                                  Apple loses a lot by not having turbo and SMTJörn Engel2020/11/18 05:04 PM
                                    Apple loses a lot by not having turbo and SMTanonymou52020/11/18 05:37 PM
                                      Apple loses a lot by not having turbo and SMTJörn Engel2020/11/19 04:28 AM
                                  Apple loses a lot by not having turbo and SMTDavid Hess'2020/11/19 07:25 PM
                          Apple loses a lot by not having turbo and SMTAdrian2020/11/18 08:23 AM
                            Apple loses a lot by not having turbo and SMTgallier22020/11/19 12:21 AM
                              Apple loses a lot by not having turbo and SMTJames2020/11/19 02:22 AM
                                Apple loses a lot by not having turbo and SMTWilco2020/11/19 05:06 AM
                              Apple loses a lot by not having turbo and SMTanonymou52020/11/19 02:34 AM
                                Apple loses a lot by not having turbo and SMTgallier22020/11/19 09:04 AM
                                  big.LITTLE with different ISAsJames2020/11/19 09:41 AM
                                    big.LITTLE with different ISAsgallier22020/11/20 03:36 AM
                                    big.LITTLE with different ISAsanon2020/11/20 01:31 PM
                              Apple loses a lot by not having turbo and SMTAdrian2020/11/19 02:56 AM
                        Apple loses a lot by not having turbo and SMTJon Masters2020/11/18 12:46 PM
                          Apple loses a lot by not having turbo and SMTanonymou52020/11/18 03:41 PM
                          Apple loses a lot by not having turbo and SMTDummond D. Slow2020/11/18 04:17 PM
                            Apple loses a lot by not having turbo and SMTMaynard Handley2020/11/18 05:46 PM
                              Apple loses a lot by not having turbo and SMTJon Masters2020/11/19 12:31 AM
                                Apple loses a lot by not having turbo and SMTDummond D. Slow2020/11/19 07:01 AM
                              Apple loses a lot by not having turbo and SMTAdrian2020/11/19 02:50 AM
                                Apple loses a lot by not having turbo and SMTAdrian2020/11/19 03:10 AM
                                Apple loses a lot by not having turbo and SMTMaynard Handley2020/11/19 10:13 AM
                                  Apple loses a lot by not having turbo and SMTDummond D. Slow2020/11/19 04:10 PM
                        Apple loses a lot by not having turbo and SMTjuanrga2020/11/19 02:49 AM
                    re: "scaling"sr2020/11/17 12:39 PM
                      re: "scaling"Adrian2020/11/17 01:41 PM
                        re: "scaling"Adrian2020/11/17 01:52 PM
                          re: "scaling"Chester2020/11/17 06:29 PM
                  re: "scaling"anonymou52020/11/16 08:18 PM
                    re: "scaling"Maynard Handley2020/11/16 08:44 PM
        And the NZ'ers are first to deliver cinebench scoresDummond D. Slow2020/11/16 05:12 PM
          And the NZ'ers are first to deliver cinebench scoresMaynard Handley2020/11/16 05:31 PM
            And the NZ'ers are first to deliver cinebench scoresDummond D. Slow2020/11/16 05:46 PM
        And the NZ'ers are first to deliver cinebench scoresMaynard Handley2020/11/16 07:04 PM
          And the NZ'ers are first to deliver cinebench scoresDummond D. Slow2020/11/16 07:28 PM
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      Phoronix Mac mini M1 benchPaul2020/11/25 03:08 AM
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